Too Long; Didn't Read
The most important thing is to understand how to go about learning, starting small and gradually advancing to more complex issues. Most people at this point tend to dive into the use of the existing CSS frameworks such as bootstrap. Having not understood the inner depth of CSS, modifying it becomes a challenge. Using SASS, we can have nested rules, work better with inline imports, develop much faster and use a variable. Yes, a variable that can be reused throughout the code. This will help a lot in the realization of code usability.